Chapter 9 Fixing System; Outline Of Operations; Outline - Canon GP335 Service Manual

I. OUTLINE OF OPERATIONS
A. Outline
Table 9-101 shows the major functions of the fixing assembly, whileg Figure 9-101 shows the
major parts of the assembly.
Item
Method
Fixing drive
Fixing heater
Fixing temperature
detection
Cleaner
Protective functions
Error code
Service mode
(major)
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Hating roller
Fixing motor (M2)
Main heater: 700 W
Sub heater: 600 W
By main thermistor (TH1) and sub thermistor (TH2)
Cleaning belt
• good for 160,000 sheets (A4, LTR)
• driven by the cleaning belt drive solenoid (SL5)
Activation timing: every time the trailing edge of paper passes through
Operations: 3 times for A4/LTR or less (including A4/LTR)
4 times for paper lager than A4/LTR
Error detection is executed by the following, and the power to the fixing heater
is shut down upon detection.
• Thermal switch
• SSR short circuit
• Main thermistor (TH1) temperature
• Sub thermistor (TH2) temperature
E000 Main thermistor overheating detection
E001 Sub thermistor overheating/open circuit detection
E002 Fixing temperature failing to reach a specific level
E003 Fixing temperature falling to an abnormal level
E004 SSR short circuit
E005 Absence of the cleaning belt
E014 Fixing motor rotation fault
DISPLAY>ANALOG>FIX-C
DISPLAY>ERROR
FUNCTION>FIXING>NIP-CHK nip measurement
FUNCTION>CLEAR>ERROR
OPTION>BODY>TEMPCOM2
OPTION>USER>WEB-DISP
COUNTER>MISC>FIX-WEB
Table 9-101 Major Functions of the Fixing Unit

CHAPTER 9 FIXING SYSTEM

Description
the fixing roller assembly.
fixing temperature
error history display
error initialization
thick paper temperature control mode switch
cleaning belt alarm display switch
cleaning belt counter reading initialization
9-1